VB.Net Tutorial/Development/Command Line

Determine whether command line arguments are present

Option Strict On
Public Module CommandTest
   Public Sub Main()
      Dim arguments As String = Command
      If arguments = String.Empty Then
         Console.WriteLine("An empty string.")
      Else
         " handle command line argument(s)
         Console.WriteLine("Command line: {0}", arguments)
      End If
   End Sub
End Module

An empty string.

Get the command line arguments using the Sub Main array

Module Module1
    Sub Main(ByVal cmdArgs() As String)
        Dim strArg As String
        If cmdArgs.Length > 0 Then
            For Each strArg In cmdArgs
                Select Case strArg.Substring(0, 3)
                    Case "/a1"
                        Console.WriteLine("Processing arg1: Value is {0}.", _
                            strArg.Substring(3, strArg.Length - 3))
                    Case "/a2"
                        Console.WriteLine("Processing arg1: Value is {0}.", _
                            strArg.Substring(3, strArg.Length - 3))
                End Select
            Next strArg
        End If
    End Sub

End Module